论文标题
受控的两耦合量系统中的量子相关动力学
Quantum Correlation Dynamics in Controlled Two-Coupled-Qubit Systems
论文作者
论文摘要
我们研究并比较了在一个以通用的Werner状态制备的两个相互作用量子的驱动系统中的同意和量子不和谐的时间演变。 〜相应的量子动力学得到了精确处理，并表现出纠缠的外观和消失。我们的分析处理透明地揭示了发生这种现象的物理原因，将其与初始状态的$ x $结构的动态不变性有关。根据初始Werner状态的保真度的时间演变，研究了系统中渐近出现的量子相关性。
We study and compare the time evolutions of concurrence and quantum discord in a driven system of two interacting qubits prepared in a generic Werner state. The~corresponding quantum dynamics is exactly treated and manifests the appearance and disappearance of entanglement. Our analytical treatment transparently unveils the physical reasons for the occurrence of such a phenomenon, relating it to the dynamical invariance of the $X$ structure of the initial state. The~quantum correlations which asymptotically emerge in the system are investigated in detail in terms of the time evolution of the fidelity of the initial Werner state.
